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Outcomes of Surgery for Chronic Type A Aortic Dissection

2014; Elsevier BV; Volume: 99; Issue: 1 Linguagem: Inglês

10.1016/j.athoracsur.2014.07.032

1552-6259

Bartosz Rylski, Rita K. Milewski, Joseph E. Bavaria, Emanuela Branchetti, Prashanth Vallabhajosyula, Wilson Y. Szeto, Nimesh D. Desai,

Cardiac Structural Anomalies and Repair

Data on outcomes of surgery for chronic Stanford type A aortic dissection are limited. We investigated the primary surgery and long-term results in patients with chronic dissection of the native ascending aorta.Between 1993 and 2013, among 696 patients (median age, 61 years [first quartile, 50; third quartile 73 years]; 64% males) who underwent surgery for type A dissection, 67 (10%) had chronic dissection by traditional criteria (>14 days). Median follow-up was 4.1 years (first quartile, 1.9; third quartile, 7.3 years; 3,105 patient-years).Patients with chronic dissection more frequently had undergone previous cardiac surgery (37% versus 9%; p < 0.001) and more frequently had bicuspid aortic valve syndrome (19% versus 7%; p < 0.001) and larger ascending aortic diameter (6.0 cm [first quartile 5.2; third quartile 7.2 cm] versus 4.9 cm [first quartile, 4.5; third quartile, 5.7 cm]; p < 0.001). Aortic dissection extended beyond the aortic arch less frequently in chronic dissection patients (27% versus 70%; p < 0.001). Moderate to severe aortic insufficiency rate was higher in chronic group (65% versus 36%; p < 0.001); they required aortic root replacement more frequently (42% versus 18%; p < 0.001) and had lower in-hospital mortality (4.5% versus 13.2%; p = 0.062). Resection of all dissected aortic tissue was achieved in 73% chronic and 30% acute dissection patients. Overall survival was better in the chronic group with 80% ± 5% versus 68% ± 2% at 5 years and 64% ± 13% versus 49% ± 3% at 10 years (log rank p = 0.021).Patients with chronic and acute type A dissection differ substantially in presentation, management, and outcome. Replacement of all dissected aortic tissue can be performed safely in the majority of patients with chronic type A dissection.